I'm a fan of Borges and the other magical realists, and I have a huge thing for the New Weird (I would do unspeakable things in order to meet China Miéville), but I'm not picky about it; I'll read anything as long as it's well-written. I'm interested in intersections of this reality with the impossible or highly implausible (hence, I suppose, my liking for magical realism et cetera), and I guess I tend to favour fantasy and horror in general simply because they often struggle to be seen as serious vehicles for literary merit.
More specifically, I'm pretty keenly interested in literature that challenges the reader to think about the nature of constructs like language and other things that are usually taken for granted, but that's not particularly related to genre, I guess.
As for what I write in... I've always followed three contradictory rules in choosing subject matter for writing, which are to write what I know (because I know it well), to write what I don't know (because I can make up something more interesting), and to ignore all rules about choosing subject matter for writing (because ultimately they're meaningless). This has meant that my stories, however normal I expect them to be when I start writing, frequently veer off into the realms of speculative fantasy - but then again, I tend to draw in elements of science fiction and supernatural horror too. Which, I guess, leaves me somewhere near to the New Weird. It's difficult to say, because it's so hazily defined, but I think that's what I identify with. I'm not sure what exactly a critic might categorise my stuff as.
This is all mostly separate from my fanfiction, which tends to be restricted in what it can be about by the nature of the media it's derived from, and so is usually a simpler kind of science-fiction-y adventure sort of thing.